Fix pyscripter#481

Author: pyscripter

Source/PythonEngine.pas

@@ -8373,7 +8373,6 @@ function  TPythonType.NewSubtypeInst( aType: PPyTypeObject; args, kwds : PPyObje
     begin
       Engine.Py_DECREF(Result);
       Result := nil;
-      obj.Free;
     end;
   end;
 end;